Do you see the dancing lady spinning left or right? ...Can you see her swap directions after some time? Depending on how much your brain sides work together you may see the effect of turning left or turning right.

...After nearly 5 minutes of looking at her lags the direction changed from right to left spinning, now I still need 20 seconds to make the swap in my dumb brain - give it a try xD.

Let them say I walked with giants. Men rise and fall like the winter wheat, but these names never die. Let them say I lived in the time of Narcisuss, sculptor of physiques. Let them say I lived in the time of Zyzz.

lol, you won't find no "unnecessary" frames with your program =)The trick is just that the pic has no 3d depth information. Imagine the legs are turned 180° and change left foot with right foot -> begins to spin other direction

Let them say I walked with giants. Men rise and fall like the winter wheat, but these names never die. Let them say I lived in the time of Narcisuss, sculptor of physiques. Let them say I lived in the time of Zyzz.

Let them say I walked with giants. Men rise and fall like the winter wheat, but these names never die. Let them say I lived in the time of Narcisuss, sculptor of physiques. Let them say I lived in the time of Zyzz.